ASTM D4477-24

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4477 − 24 An American National Standard
Standard Specification for
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Rigid (Unplasticized) Poly(Vinyl Chloride) (PVC) Soffit
This standard is issued under the fixed designation D4477; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification establishes requirements and test
D618 Practice for Conditioning Plastics for Testing
methods for the materials, dimensions, camber, impact
D635 Test Method for Rate of Burning and/or Extent and
strength, expansion, and appearance of extruded single-wall
Time of Burning of Plastics in a Horizontal Position
soffit manufactured from rigid (unplasticized) PVC compound.
D696 Test Method for Coefficient of Linear Thermal Expan-
Methods of indicating compliance with this specification are
sion of Plastics Between −30°C and 30°C with a Vitreous
also provided.
Silica Dilatometer
1.2 The use of PVC recycled plastic in this product shall be D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plas-
in accordance with the requirements in Section 4.
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tics (Withdrawn 2024)
1.3 Soffit produced to this specification shall be installed in
D2244 Practice for Calculation of Color Tolerances and
accordance with the manufacturer’s installation instructions for
Color Differences from Instrumentally Measured Color
the specific product to be installed.
Coordinates
D2457 Test Method for Specular Gloss of Plastic Films and
NOTE 1—Information with regard to soffit maintenance shall be
Solid Plastics
obtained from the manufacturer.
D3892 Practice for Packaging/Packing of Plastics
1.4 The values stated in inch-pound units are to be regarded
D4226 Test Methods for Impact Resistance of Rigid Poly-
as standard. The values given in parentheses are mathematical
(Vinyl Chloride) (PVC) Building Products
conversions to SI units that are provided for information only
D5033 Guide for Development of ASTM Standards Relating
and are not considered standard.
to Recycling and Use of Recycled Plastics (Withdrawn
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2007)
1.5 The following precautionary caveat pertains to the test
D5947 Test Methods for Physical Dimensions of Solid
method portion only, Section 6 of this specification. This
Plastics Specimens
standard does not purport to address all of the safety concerns,
E631 Terminology of Building Constructions
if any, associated with its use. It is the responsibility of the user
E1753 Practice for Use of Qualitative Chemical Spot Test
of this standard to establish appropriate safety, health, and
Kits for Detection of Lead in Dry Paint Films
environmental practices and determine the applicability of
regulatory limitations prior to use.
3. Terminology
3.1 Definitions—Definitions are in accordance with Termi-
NOTE 2—There is no known ISO equivalent to this standard.
nologies D883, D1600, and E631, unless otherwise specified.
1.6 This international standard was developed in accor-
3.2 Definitions of Terms Specific to This Standard:
dance with internationally recognized principles on standard-
3.2.1 nominal, (as related to dimensions of vinyl soffıts),
ization established in the Decision on Principles for the
adj—the value that a manufacturer consistently uses to repre-
Development of International Standards, Guides and Recom-
sent a specific property or dimension of a vinyl soffit product in
mendations issued by the World Trade Organization Technical
public claims including, but not limited to, product literature,
Barriers to Trade (TBT) Committee.
advertisements, quotations, and certificates of conformance.
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This specification is under the jurisdiction of ASTM Committee D20 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics and is the direct responsibility of Subcommittee D20.24 on Plastic Building contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved April 1, 2024. Published April 2024. Originally the ASTM website.
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approved in 1985. Last previous edition approved in 2022 as D4477 – 22. DOI: The last approved version of this historical standard is referenced on
10.1520/D4477-24. www.astm.org.
*A Summary of Changes section appears at the end of this standard
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